You dont know my qualifications or even the function of a systems Engineer, and I dont know Mr Zubrin, who sounds like maybe a specialist, if so he would not be qualified to comment on the Systems view anyway, But I am more than happy to talk to him if he was driven to comment on my analyses nonetheless. Sorry again, but your matetials here look like nothing more than investor snake oil to me, even more so, as our dialog continues, so I am inclined to comment no further, for your own benefit.